Fracking emits much more than previosuly expected

The EPA has been under-counting how much methane, which is 20-40 times more powerful a greenhouse gas than CO2, fracking emits at drilling sites, new research shows.

"The study, published Monday in the Proceedings of the National Academy of Sciences, adds to a growing body of research that suggests the EPA is gravely underestimating methane emissions from oil and gas operations."